JP2008224228A - Fixing structure of magnetized pulsar ring and rolling bearing device equipped with sensor using this - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a magnetized pulsar ring capable of preventing it from being damaged by change in temperature or the like, and to provide a rolling bearing device equipped with a sensor using this. <P>SOLUTION: The fixing structure of a magnetized pulsar ring 11 is provided with a radially recessed cut out part 20 formed at the side face 10c of a slinger 10 where the magnetized pulsar ring is attached. Also, a radially protruding part 21 is formed in the magnetized pulsar ring 11 to be inserted into the cutout part 20 for preventing the magnetized pulsar ring 11 from separating from the side face 10c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fixing structure for fixing a magnetized pulsar ring used for detecting the number of rotations of a rotating body, and a sensor-equipped rolling bearing device using the same.

Some rolling bearing devices that support wheels of automobiles or the like incorporate a sensor device for detecting the rotational speed of the wheels in order to control an antilock brake system or the like. Such a conventional rolling bearing device with a sensor includes, for example, a magnetized pulsar ring installed on the inner shaft (rotating wheel) side and a magnet facing the magnetized pulsar ring as described in Patent Document 1 below. And a sensor. The magnetized pulsar ring is an outer surface in the axial direction of a rotating ring side member (for example, a slinger) in a sealing device that seals an annular member between inner and outer rings with an elastic member made of rubber mixed with magnetic powder such as ferrite. Is attached to the rotating wheel side so as to be integrally rotatable. In this magnetized pulsar ring, a plurality of N · S poles are alternately arranged around the circumferential direction.
On the other hand, the magnetic sensor includes a magnetic detection element, and is disposed on the outer side in the axial direction of the rotating wheel so that the detection surface thereof faces the detection surface of the magnetized pulsar ring. And a magnetic sensor is comprised so that the rotational speed of a rotating wheel may be detected by detecting the change of the magnetic field from the magnetization pulsar ring according to rotation of a rotating wheel.

Japanese Patent Laying-Open No. 2006-220270 (FIGS. 1 and 2)

In the above-described conventional rolling bearing device with a sensor, the magnetized pulsar ring is weak in strength because it is formed of a magnetic material using an elastic body such as rubber, and the magnetized surface is caused by dust or the like entering from the outside. Damage and wear may occur, and the magnetic characteristics may be deteriorated.
For this reason, for example, instead of a magnetic material using an elastic body such as rubber, it is conceivable to use a plastic magnet having excellent scratch resistance and wear resistance. By using this plastic magnet, it is possible to suppress deterioration of magnetic properties due to damage or wear.
On the other hand, the plastic magnet is formed by mixing a magnetic powder such as ferrite and a resin, and between the metal rotating wheel side member to which the magnetized pulsar ring is fixed, the heat is generated. The expansion coefficient differs greatly. In addition, this plastic magnet is excellent in scratch resistance and wear resistance as compared with an elastic body such as rubber, but is highly brittle and easily damaged by deformation.
For this reason, when a magnetized pulsar ring made of a plastic magnet is bonded or press-fitted to the rotating wheel side member, there is a difference in the amount of deformation between the magnetized pulsar ring and the rotating wheel side member due to a temperature change or the like. If an excessive deformation stress acts on the magnetized pulsar ring, the magnetized pulsar ring may be damaged.
The present invention has been made in view of such circumstances, and prevents the magnetized pulsar ring from being damaged even if there is a difference in the amount of deformation from the rotating wheel side member due to a temperature change or the like. An object of the present invention is to provide a fixed structure of a magnetized pulsar ring that can be used, and a rolling bearing device with a sensor using the same.

  To achieve the above object, the present invention provides a fixing structure for fixing a magnetic pulsar ring in which a large number of magnetic poles are arranged at predetermined intervals in the circumferential direction on a mounting surface of a rotating body, wherein the magnetic pulsar ring is The mounting surface is insert-molded, and the mounting surface is formed with a concave portion that is recessed in the radial direction of the rotating body, and the magnetized pulsar ring is fitted into the concave portion so as to be magnetized. A protrusion projecting in the radial direction is formed to prevent the pulsar ring from being detached from the mounting surface of the rotating body.

  According to the fixed structure of the magnetic pulsar ring configured as described above, the magnetic pulsar ring is provided with a protrusion for preventing the magnetic pulsar ring from being detached from the rotating body by being fitted into the concave portion of the mounting surface. Therefore, the magnetic pulsar ring is prevented from detaching from the mounting surface of the rotating body without press-fitting the magnetic pulsar ring into the mounting surface or adhering with an adhesive as in the conventional example, for example. The magnetic pulsar ring can be kept fixed to the mounting surface. For this reason, the magnetic pulsar ring is not restrained more than necessary with respect to the mounting surface, and even if the rotating body and the magnetic pulsar ring are expanded and contracted due to a temperature change, a difference in deformation amount generated between them is allowed. can do. Therefore, it is possible to suppress an excessive deformation stress from acting on the magnetized pulsar ring, and as a result, it is possible to prevent the magnetized pulsar ring formed by the relatively brittle plastic magnet from being damaged.

In the magnetized pulsar ring fixing structure, the protrusion is preferably formed on an annular peripheral surface provided on a contact surface of the magnetized pulsar ring that contacts the mounting surface.
In this case, providing the protrusion on the annular peripheral surface makes it easy to protrude the protrusion in the radial direction.

Further, the present invention is a fixing structure for fixing a magnetized pulsar ring in which a large number of magnetic poles are arranged at predetermined intervals in the circumferential direction to the mounting surface of the rotating body, and the magnetized pulsar ring is attached to the mounting surface. The mounting surface is provided to protrude from the mounting surface, and an engaged portion having a facing surface facing the mounting surface is provided. An engagement surface that prevents the magnetized pulsar ring from being detached from the mounting surface of the rotating body by abutting engagement with the opposing surface is formed.
Even in this case, the magnetized pulsar ring side engaging surface and the engaged portion side facing surface abut and engage with each other, so that the magnetized pulsar ring is not restrained to the mounting surface more than necessary. It is possible to reliably prevent the magnetic pulsar ring from separating from the mounting surface of the rotating body.

Further, the present invention provides a fixed wheel and a rotating wheel, a rolling element that is rotatably arranged between them, a magnetizing pulsar ring that is fixed to a fixing member that is fixed to the rotating wheel, and a magnetizing pulsar ring. And a magnetic sensor for detecting a rotation state of the rotating wheel by detecting magnetism, wherein the magnetized pulsar ring is fixed to the fixed member by the fixing structure of the magnetized pulsar ring described above. It is characterized by being.
According to the rolling bearing device with a sensor configured as described above, it is possible to suppress an excessive deformation stress from acting on the magnetized pulsar ring, and to prevent the damage.

  According to the fixed structure of the magnetized pulsar ring of the present invention and the rolling bearing device with a sensor using the same, even if there is a difference in deformation amount between the rotating wheel side member due to a temperature change or the like, the magnetization Damage to the pulsar ring can be prevented.

  Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing the configuration of a sensor-equipped rolling bearing device to which a magnetized pulsar ring fixing structure according to a first embodiment of the present invention is applied. The sensor-equipped rolling bearing device 1 supports a wheel of a vehicle such as an automobile so as to be rotatable with respect to a suspension device.

  In FIG. 1, a sensor-equipped rolling bearing device 1 constitutes a double-row angular ball bearing, and includes an inner shaft 2 having a flange portion 2 a to which a wheel (not shown) is attached at one end, and an outer peripheral side of the inner shaft 2. A concentric outer ring 3, a plurality of balls 4 as rolling elements interposed between the inner shaft 2 and the outer ring 3, a cage 5 for holding these balls 4 equally in the circumferential direction, and both axial ends Seal members 6, 7 that seal an annular gap between the inner shaft 2 and the outer ring 3 on the side, and a magnetic sensor S disposed on the other axial end side so as to face the seal member 7.

The outer ring 3 is a fixed ring fixed to the vehicle side, and an attachment flange 3a for attachment to a vehicle suspension is formed on the outer peripheral surface. Further, first and second outer ring raceways 3b and 3c on which the balls 4 roll are formed on the inner peripheral surface thereof.
The inner shaft 2 is an axle to which the wheel is attached and constitutes a rotating wheel of the sensor-equipped rolling bearing device 1. A plurality of hub bolts 2a1 for fixing the wheel to the flange portion 2a are fixed to the flange portion 2a formed at one end of the inner shaft 2. A first inner ring raceway 2b is formed on the outer peripheral surface of the inner shaft 2 so as to face the first outer ring raceway 3b. A small-diameter portion 8 having a smaller diameter than the outer peripheral surface of the inner shaft 2 is formed at the other end portion of the inner shaft 2, and the second inner-ring track 2 c facing the second outer ring track 3 c is formed in the small-diameter portion 8. An annular inner ring member 9 is formed on the outer peripheral surface.

Between the first inner ring raceway 2b and the first outer ring raceway 3b, and between the second inner ring raceway 2c and the second outer ring raceway 3c, the plurality of balls 4 described above roll. Arranged freely.
With the above configuration, the sensor-equipped rolling bearing device 1 rotatably supports the inner shaft 2 with respect to the outer ring 3 and rotatably supports the wheels fixed to the inner shaft 2.

  A seal member 7 that seals an annular gap between the inner shaft 2 and the outer ring 3 on the other end side in the axial direction includes an annular slinger 10 fixed to the inner ring member 9 so as to be integrally rotatable, and the slinger 10 An annular magnetized pulsar ring 11 fixed so as to be integrally rotatable, and an annular cored bar 13 fitted and fixed to the inner peripheral surface 3d on the other end side of the outer ring 3 are provided.

  The cored bar 13 is formed by pressing a cold-rolled steel plate such as SPCC, SPCD, or SPCE, and a seal ring 12 that seals between the cored bar 13 and the slinger 10 at the inner peripheral end thereof. Is fixed by vulcanization adhesion or the like.

  The slinger 10 is a member formed in an annular shape with an L-shaped cross section by pressing a cold-rolled steel plate such as SPCC, SPCD, SPCE, etc., like the core metal 13, and is externally fixed to the outer peripheral surface of the inner ring member 9. As a result, the inner shaft 2 is fixed so as to be integrally rotatable. Accordingly, the magnetized pulsar ring 11 fixed to the slinger 10 so as to be integrally rotatable can also rotate integrally with the inner shaft 2. The manner in which the magnetized pulsar ring 11 is fixed to the slinger 10 will be described in detail later.

  The magnetized pulsar ring 11 is formed in an annular shape using a plastic magnet, and a large number of magnetic poles are arranged at predetermined intervals in the circumferential direction on the side surface 11a. That is, the side surface 11a is magnetized so that N poles and S poles are alternately arranged at a predetermined interval, thereby forming a magnetized surface.

The magnetic sensor S is disposed so as to face the side surface 11a of the magnetized pulsar ring 11 with a slight gap. For this reason, the magnetic pulsar ring 11 that rotates integrally with the inner shaft 2 can change the magnetic pole with respect to the magnetic sensor S according to the rotation of the inner shaft 2.
The magnetic sensor S is a sensor that detects a change in the magnetic pole, and is connected to a vehicle control device on which the rolling bearing device 1 with the sensor is mounted, and a detection signal regarding the detected change in the magnetic pole is sent to the control device. It is configured to output. The magnetic sensor S detects a change in the magnetic pole of the magnetized pulsar ring 11 that changes in accordance with the rotation of the inner shaft 2 and outputs a detection signal to the control device of the vehicle. The control device can recognize the rotational speed of the inner shaft 2 based on the detection signal of the magnetic sensor S and reflect it in the control of the antilock brake system of the vehicle.

Next, how the magnetized pulsar ring 11 is fixed to the slinger 10 will be described. FIG. 2A is an enlarged sectional view showing only the magnetized pulsar ring 11 and the slinger 10.
In the figure, a slinger 10 includes a cylindrical portion 10a fitted on the inner ring member 9, and an annular portion 10b that extends radially outward by bending the other end of the cylindrical portion 10a and to which the magnetized pulsar ring 11 is fixed. And have.
FIG. 2B is an external view of the magnetized pulsar ring 11 and the slinger 10 when viewed from the arrow B in FIG. In the figure, the annular portion 10b is formed with a notched portion 20 as a concave portion that is recessed in the radial direction by notching the outer periphery of the annular portion 10b in an arc shape.
The notches 20 are, for example, arranged at three equal intervals along the circumferential direction of the annular portion 10b, and the outer periphery of the annular portion 10b is cut out in a circular arc shape. It is formed so as to be recessed in the radial direction from the surface 10d. The end surface 20a of the notch 20 is a tapered surface that is inclined at an angle θ smaller than 90 ° with the side surface 10c to which the magnetized pulsar ring 11 is fixed.

As described above, the magnetized pulsar ring 11 fixed to the slinger 10 is formed in an annular shape using a plastic magnet, and contacts the step surface 11b that contacts the side surface 10c of the slinger 10 and the outer peripheral surface 10d. An annular peripheral surface 11c is formed. The magnetized pulsar ring 11 is fixed to the slinger 10 by the annular portion 10b of the slinger 10 being fitted into the step surface 11b and the annular peripheral surface 11c. That is, the magnetized pulsar ring 11 is fixed to the slinger 10 with the side surface 10c and the outer peripheral surface 10d of the annular portion 10b as attachment surfaces.
Further, the annular peripheral surface 11c is formed with a protruding portion 21 that protrudes radially inward from the annular peripheral surface 11c and is fitted into the notch portion 20. The projection 21 is fitted in the notch 20 by projecting in the radial direction, and the end surface 21a of the projection 21 is formed in a tapered surface that matches the end surface 20a of the notch 20, It is in contact with the end face 20a.
That is, the end surface 20a of the notch 20 and the end surface 21a of the protrusion 21 are in contact with each other, and the tip of the notch 20 is formed between the end surface 21a of the protrusion 21 and the step surface 11b. It becomes a state fixed between. For this reason, the magnetized pulsar ring 11 is restrained while being in contact with the side surface 10c of the annular portion 10b, and can be prevented from being detached from the slinger 10.
Further, since the protrusion 21 is fitted in the notch 20 obtained by notching the annular portion 10 b, the magnetized pulsar ring 11 can be prevented from rotating relative to the slinger 10.

The magnetized pulsar ring 11 is formed by insert molding using a plastic magnet. That is, the magnetized pulsar ring 11 is integrally formed with the slinger 10 by loading the slinger 10 into a mold or the like and then injecting and solidifying a mixture of resin and magnetic powder as a raw material of the plastic magnet into the mold. Has been.
As described above, the magnetized pulsar ring 11 is formed with the projection 21 that restrains the magnetized pulsar ring 11 in contact with the side surface 10c of the slinger 10; Once formed, it cannot be attached to the slinger 10. The magnetized pulsar ring 11 can be formed in a state of being fixed to the slinger 10 by insert molding with respect to the slinger 10 as described above.

Further, the plastic magnet constituting the magnetized pulsar ring 11 is made of a ferrite magnetic powder, a rare earth magnetic powder such as neodymium or samarium, and a resin material such as polyphenylene sulfide (PPS) resin or polyamide (PA) resin. After mixing, it is obtained by forming into a predetermined shape. As described above, since the plastic magnet uses the resin or the like as a binder, the plastic magnet is superior in scratch resistance and wear resistance as compared with a magnetic material using an elastic member such as rubber as a binder.
Moreover, the magnetic powder contained in the plastic magnet constituting the magnetized pulsar ring 11 of the present embodiment may be in a state in which a magnetic field is oriented in a predetermined direction. In this case, better magnetic characteristics can be obtained.

  According to the fixing structure of the magnetized pulsar ring 11 of the present embodiment configured as described above, the magnetized pulsar ring 11 is detached from the side surface 10c by engaging the notched portion 20 with the magnetized pulsar ring 11. Since the protruding protrusion 21 is formed, for example, the magnetization pulsar ring 11 is prevented from being detached from the side surface 10c without being press-fitted into the magnetization pulsar ring 11 or bonded with an adhesive as in the conventional example. The magnetized pulsar ring 11 can be maintained in a state of being fixed to the side surface 10c. For this reason, the magnetized pulsar ring 11 is not restrained more than necessary with respect to the side surface 10c, and even if the slinger 10 and the magnetized pulsar ring 11 are expanded and contracted due to a temperature change, the difference in deformation amount generated between the two is reduced. Can be tolerated. Therefore, it is possible to suppress an excessive deformation stress from acting on the magnetized pulsar ring 11, and as a result, it is possible to prevent the magnetized pulsar ring 11 formed by a relatively brittle plastic magnet from being damaged.

Moreover, in this embodiment, since the projection part 21 is formed so that it may protrude in a radial direction so that it may be fitted in the notch part 20 formed so that it may be dented in a radial direction, the magnetization pulsar ring 11 is formed. In addition to reliably preventing separation from the side surface 10c, relative rotation between the magnetized pulsar ring 11 and the slinger 10 can also be prevented.
In the above-described embodiment, the cutout portion 20 has the circular portion 10b cut out in an arc shape. However, if the magnetized pulsar ring 11 can be prevented from being detached or relatively rotated, for example, a rectangular shape or other shapes can be used. It may be cut out.

  FIG. 3A is a sectional view of the magnetized pulsar ring 11 and the slinger 10 according to the second embodiment of the present invention, and FIG. 3B is an external view showing a part of the slinger 10. The main difference between the present embodiment and the first embodiment is that the protrusion 21 formed on the magnetized pulsar ring 11 is fitted in a recess 22 that is recessed radially outward in the annular portion 10b. It is a point protruding and formed. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

In the drawing, the side surface 10c of the annular portion 10b of the slinger 10 in this embodiment is formed by an inner side surface 10c1 connected to the cylindrical portion 10a and an outer side surface 10c3 connected to the inner side surface 10c1 via the annular peripheral surface 10c2. The magnetized pulsar ring 11 is fixed to the slinger 10 with the side surface 10c as an attachment surface.
In the annular peripheral surface 10c2, the above-described recesses 22 are arranged at, for example, three locations at regular intervals along the circumferential direction. The concave portion 22 has a substantially wedge-shaped side cross section and is formed in a bottomed hole shape that opens in the annular peripheral surface 10c2 and extends radially outward.

The magnetized pulsar ring 11 includes an outer side surface 11d that contacts the outer side surface 10c3, an inner side surface 11e that contacts the inner side surface 10c1, and an annular peripheral surface 11f that contacts the annular peripheral surface 10c2.
The protrusion 21 is formed so as to protrude radially outward from the annular peripheral surface 11 f and be fitted into the recess 22.

In the above configuration, the protrusion 21 of the present embodiment is engaged with the recess 22 by being formed so as to be fitted into the recess 22 formed in a bottomed hole shape. At this time, the magnetized pulsar ring 11 is constrained by the protrusion 21 and the recess 22 so as not to be separated from each other in contact with the side surface 10c of the annular portion 10b. As a result, the magnetized pulsar ring 11 is reliably prevented from detaching from the slinger 10 without restraining the magnetized pulsar ring 11 to the side surface 10c more than necessary, and the magnetized pulsar ring 11 is rotated relative to the slinger 10. Can be prevented.
In the above-described embodiment, the concave portion 22 has a wedge-shaped side cross section, but the shape of the concave portion 22 is not particularly limited, and may be, for example, a circular hole or a rectangular hole.

  FIG. 4A is a cross-sectional view of the magnetized pulsar ring 11 and the slinger 10 according to the third embodiment of the present invention, and FIG. 4B is an external view showing a part of the slinger 10. The main difference between this embodiment and the first embodiment is that the engaging portion 24 that holds the protruding member 23 as the engaged portion fixed to the side surface 10c of the annular portion 10b of the slinger 10 is attached. This is a point formed in the magnetic pulsar ring 11.

In the figure, on the annular portion 10b of the slinger 10, as described above, the protruding members 23 are arranged at, for example, three locations at equal intervals along the circumferential direction. The protruding member 23 is a member obtained by bending a steel plate or the like into a crank shape, and is fixed to the side surface 10c of the annular portion 10b by welding or the like.
The projecting member 23 includes a fixing portion 23a that is abutted and fixed to the side surface 10c, a separation portion 23b that is spaced apart from the side surface 10c, and a connection portion 23c that connects them. The separation portion 23b is disposed substantially parallel to the side surface 10c and has a facing surface 25 that faces the side surface 10c. The facing surface 25 is provided substantially parallel to the side surface 10c.

The magnetizing pulsar ring 11 is formed with an engaging portion 24 for holding the protruding member 23 as described above. The engaging portion 24 is shaped so as to substantially conform to the outer surface shape of the projecting member 23 so as to embed the projecting member 23 in the inside of the magnetized pulsar ring 11, and is in contact with the opposing surface 25 of the projecting member 23. The engaging surface 24a is engaged. The magnetized pulsar ring 11 is fixed to the slinger 10 with the side surface 10c of the annular portion 10b as a mounting surface in a state where the engaging surface 24a is in contact with and engaged with the opposing surface 25.
At this time, the magnetized pulsar ring 11 is constrained by the engagement surface 24a and the opposing surface 25 so as not to be separated from each other in contact with the side surface 10c of the annular portion 10b.
As a result, it is possible to reliably prevent the magnetized pulsar ring 11 from being detached from the slinger 10 without restraining the magnetized pulsar ring 11 to the side surface 10c more than necessary. Furthermore, since the protruding member 23 is held by the engaging portion 24 of the magnetized pulsar ring 11, the relative rotation of the magnetized pulsar ring 11 with respect to the slinger 10 can also be prevented.

  The present invention is not limited to the above embodiments. In the above embodiment, the magnetization pulsar ring in which the magnetized surface is arranged on the side surface of the slinger and the magnetic sensor is arranged in the thrust direction is exemplified, but the magnetized surface is arranged on the peripheral surface and the magnetic sensor is arranged in the radial direction. The present invention can also be applied to the magnetized pulsar ring.

It is sectional drawing which shows the structure of the rolling bearing apparatus with a sensor provided with the magnetization pulsar ring which concerns on 1st embodiment of this invention. (A) is sectional drawing which expanded and showed only the magnetization pulsar ring and the slinger, (b) is an external view of the magnetization pulsar ring and the slinger as viewed from the arrow B in FIG. It is. (A) It is sectional drawing of the magnetization pulsar ring and slinger which concern on 2nd embodiment of this invention, (b) is the external view which showed a part of slinger. (A) is sectional drawing of the magnetization pulsar ring and slinger which concern on 3rd embodiment of this invention, (b) is the external view which showed a part of slinger.

Explanation of symbols

1 Rolling bearing device with sensor 2 Inner shaft (rotating wheel)
3 Outer ring (fixed ring)
4 balls (rolling elements)
10 Slinger (fixing member)
10c Side (mounting surface)
11 Magnetized pulsar ring 11c Annular peripheral surface 11f Annular peripheral surface 20 Notch (recess)
21 Projection 22 Recess 23 Projection (engaged part)
24a Engagement surface 25 Opposing surface S Magnetic sensor

Claims (4)

A fixing structure for fixing a magnetized pulsar ring in which a large number of magnetic poles are arranged at predetermined intervals in the circumferential direction on the mounting surface of the rotating body,
The magnetized pulsar ring is insert-molded with respect to the mounting surface,
The mounting surface is formed with a recess that is recessed in the radial direction of the rotating body,
The magnetized pulsar ring is provided with a radially projecting protrusion which is fitted into the recess to prevent the magnetized pulsar ring from being detached from the mounting surface of the rotating body. Fixed structure of magnetic pulsar ring.   The fixed structure for a magnetized pulsar ring according to claim 1, wherein the protrusion is formed on an annular peripheral surface provided on a contact surface of the magnetized pulsar ring that contacts the mounting surface. A fixing structure for fixing a magnetized pulsar ring in which a large number of magnetic poles are arranged at predetermined intervals in the circumferential direction on the mounting surface of the rotating body,
The magnetized pulsar ring is insert-molded with respect to the mounting surface,
The mounting surface is provided to protrude from the mounting surface, and an engaged portion having a facing surface facing the mounting surface is provided,
The magnetizing pulsar ring is formed with an engaging surface that prevents the magnetized pulsar ring from being detached from the mounting surface of the rotating body by abutting engagement with the facing surface. Fixed structure of magnetic pulsar ring. A fixed wheel and a rotating wheel;
A rolling element that is arranged to freely roll between these,
A magnetized pulsar ring fixed to a fixing member fixed to the rotating wheel;
In a sensor-equipped rolling bearing device comprising: a magnetic sensor that detects a rotation state of the rotating wheel by detecting magnetism of the magnetized pulsar ring.
4. The sensor-equipped rolling bearing device, wherein the magnetized pulsar ring is fixed to the fixing member by a magnetized pulsar ring fixing structure according to claim 1.

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